Multipole plasmon resonances in gold nanorods

Emma Kathryn Payne; Kevin L. Shuford; Sungho Park; George C. Schatz; Chad A. Mirkin

doi:10.1021/jp056606x

Multipole plasmon resonances in gold nanorods

Emma Kathryn Payne, Kevin L. Shuford, Sungho Park, George C. Schatz, Chad A. Mirkin

Northwestern University

Research output: Contribution to journal › Article › peer-review

293 Citations (Scopus)

Abstract

The optical properties of gold rods electrochemically deposited in anodic aluminum oxide templates have been investigated. Homogeneous suspensions of rods with an average diameter of 85 nm and varying lengths of 96, 186, 321, 465, 495, 578, 641, 735, and 1175 nm were fabricated. The purity and dimensions of these rod nanostructures allowed us to observe higher-order multipole resonances for the first time in a colloidal suspension. The experimental optical spectra agree with discrete dipole approximation calculations that have been modeled from the dimensions of the gold nanorods.

Original language	English
Pages (from-to)	2150-2154
Number of pages	5
Journal	Journal of Physical Chemistry B
Volume	110
Issue number	5
DOIs	https://doi.org/10.1021/jp056606x
Publication status	Published - Feb 9 2006

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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AU - Mirkin, Chad A.

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AB - The optical properties of gold rods electrochemically deposited in anodic aluminum oxide templates have been investigated. Homogeneous suspensions of rods with an average diameter of 85 nm and varying lengths of 96, 186, 321, 465, 495, 578, 641, 735, and 1175 nm were fabricated. The purity and dimensions of these rod nanostructures allowed us to observe higher-order multipole resonances for the first time in a colloidal suspension. The experimental optical spectra agree with discrete dipole approximation calculations that have been modeled from the dimensions of the gold nanorods.

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